Home / 10,870.60-16,315.20-10,788.78

Finding the Fourth Proportional to 10,870.60, 16,315.20 and 10,788.78

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Solution

The fourth proportional to 10,870.60, 16,315.20 and 10,788.78 is: 16,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,870.60 : 16,315.20 = 10,788.78 : x
  2. Step 2: Convert to fraction form
    10,870.60/16,315.20 = 10,788.78/x
  3. Step 3: Cross multiply
    10,870.60x = 16,315.20 × 10,788.78
  4. Step 4: Simplify right side
    10,870.60x = 176,021,103.46
  5. Step 5: Solve for x
    x = 176,021,103.46/10,870.60
  6. Step 6: Final answer
    x = 16,192.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.